Revert "Fix a ton of compiler warnings."

app/animation.h

-// Copyright (c) 2009 The Chromium Authors. All rights reserved.
+// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 // Inspired by NSAnimation
 
 #ifndef APP_ANIMATION_H_
 #define APP_ANIMATION_H_
 
 #include "base/timer.h"
 
 class Animation;
@@ skipping 13 matching lines @@
   virtual void AnimationEnded(const Animation* animation) {
   }
 
   // Called when an animation has progressed.
   virtual void AnimationProgressed(const Animation* animation) {
   }
 
   // Called when an animation has been canceled.
   virtual void AnimationCanceled(const Animation* animation) {
   }
-
- protected:
-  ~AnimationDelegate() {}
 };
 
 // Animation
 //
 //  This class provides a basic implementation of an object that uses a timer
 //  to increment its state over the specified time and frame-rate. To
 //  actually do something useful with this you need to subclass it and override
 //  AnimateToState and optionally GetCurrentValue to update your state.
 //
 //  The Animation notifies a delegate when events of interest occur.
@@ skipping 73 matching lines @@
   base::RepeatingTimer<Animation> timer_;
 
  private:
   // Called when the animation's timer expires, calls Step.
   void Run();
 
   DISALLOW_COPY_AND_ASSIGN(Animation);
 };
 
 #endif  // APP_ANIMATION_H_